I am working on karamba3D (Ver 1.3.3) for validating lattice structures with beams length between 1 to 10 mm and diameters between 0.5 to 1.5 mm. I encountered some computational issue in the calculation of the shear stress and the bending moment for those small lattices. In particular, their values resulted null.
To better understand the issue, I simulated a simple cantilevered beam, varying the beam length from 100 mm to 3 mm, keeping constant the diameter (1.5 mm), and applying a force of 10 Newtons. I noted that for beam lengths of 5.67 mm and lower Karamba stops calculating the shear force and the bending moment.
Could it be related to the slenderness ratio? Do you know if maybe Karmaba has a tolerance which does not allow to validate small beams?
Thank you and best regards,